It was initially thought the skull was about 100 years old but archaeologists discovered it dated from the Iron Age – about 500BC.

It has been sent to Dundee University’s forensic anthropology department for further examination. Experts now hope to dig up the rest of the girl’s skeleton. The nine-hole Old Golf Course, is owned by East Lothian Council.

A council spokeswoman said yesterday: “On discovery, the police were contacted so that they could determine if this was ancient or related to something more recent.”